Math  /  Algebra

QuestionMetropolis requires that for every 5 plots of land ushild for buildings, 2 plots of land be used for green space.
A company bought 133 plots of land. How many plots of land did they use for green space?

Studdy Solution

STEP 1

What is this asking? How many plots of land are used for green space if 2 out of every 7 plots must be green space, given a total of 133 plots? Watch out! Don't forget that the ratio is 2 green plots out of *every* 7 plots, not just 2 out of 5!

STEP 2

1. Calculate the fraction of green space.
2. Calculate the number of plots for green space.

STEP 3

We know that for every **5 building plots** and **2 green plots**, there are a total of 5+2=75 + 2 = 7 plots.

STEP 4

This means that the **fraction** of plots used for green space is 27\frac{2}{7}.
So out of every **7 plots**, **2** are for green space.
Makes sense, right?

STEP 5

The company bought a total of **133 plots**.
To find the number of green plots, we **multiply** the **total number of plots** by the **fraction** representing green space.

STEP 6

So, we have 13327133 \cdot \frac{2}{7}.
Let's do this multiplication!

STEP 7

We can write 133 as 1331\frac{133}{1}.
So, we have 133127=133217=2667\frac{133}{1} \cdot \frac{2}{7} = \frac{133 \cdot 2}{1 \cdot 7} = \frac{266}{7}.

STEP 8

Now, let's divide 266 by 7.
We get 2667=38\frac{266}{7} = 38.
Awesome!

STEP 9

The company used **38 plots** for green space.

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